A new kind of phishing call

The other day, I was driving to my friend's house to watch her cats whilst she was away for the weekend. Just go feed them and run them around until they are tired out, normal stuff. Anyway, as I'm driving, I get a call! My car is "fancy" enough that it shows me the number on the dashboard. I don't recognize it, but I decide to answer it anyway. It's probably spam, but why not? I answer the phone…